import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import users from '../components/user/users.vue'
import rights from '../components/power/Rights.vue'

Vue.use(VueRouter)



const router = new VueRouter({
    routes: [{ path: '/', redirect: '/login' },
        { path: '/login', component: Login },
        {
            path: '/home',
            component: Home,
            redirect: '/welcome',
            children: [
                { path: '/welcome', component: Welcome },
                { path: '/users', component: users },
                { path: '/rights', component: rights }
            ]
        }
    ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
    // to 将要访问的路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数，表示放行
    // next() 放行 next('/login') 强制跳转
    if (to.path === '/login') return next();
    const tokenStr = window.sessionStorage.getItem('token')
    if (!tokenStr) return next('/login')
    next();
})

export default router;